INFLUENCE OF FINISH ROLLING TEMPERATURE ON MICROSTRUCTURE AND PROPERTY OF NON-QUENCHED AND TEMPERED STEEL
The differences of microstructure and property of non-quenched and tempered bainitic steel under different finish rolling temperatures was analyzed by the methods of color metallographic,scanning electron microscopy(SEM)and X-ray diffraction(XRD).The results show that the sample with finish rolling temperature 870℃,has high yield strength,tensile strength and impact energy.Comparing with finish rolling temperature 750℃and 800℃,the sample has a higher content of bainite phase and bainitic lath is smaller at finish rolling temperature 870℃.Meanwhile,the percentage of retained austenite is 15%and retained austenite has dispersed distribution.It indicates that,when the finish rolling temperature is higher,the experimental steel has fine phase composition,microstructure distribution and excellent mechanical properties.
Non-quenched and tempered steel Finish Rolling Temperature Microstructure and Property
Yakun GAO Yinli CHEN Liming XU Yuhao WANG
Engineering Research Institute,University of Science and Technology Beijing,100083,China
国内会议
杭州
英文
371-377
2015-11-11（万方平台首次上网日期，不代表论文的发表时间）